:root {
      --pink-accent: #e91e63;
      --pink-gradient-start: #ff1744;
      --pink-gradient-end: #e91e63;
      --white: #ffffff;
      --dark-text: #333333;
    }

    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    body {
      font-family: "Segoe UI", Arial, sans-serif;
      height: 100vh;
      overflow: hidden;
      background: linear-gradient(90deg, 
        rgba(255, 255, 255, 0.1) 0%, 
        rgba(255, 255, 255, 0.3) 20%, 
        rgba(255, 23, 68, 0.2) 40%,
        rgba(255, 23, 68, 0.5) 60%,
        var(--pink-gradient-end) 80%,
        var(--pink-gradient-start) 100%
      );
    }

    .main-container {
      display: flex;
      height: 100vh;
    }

    .left-section {
      flex: 1;
      display: flex;
      justify-content: center;
      align-items: center;
      position: relative;
      background: transparent;
    }

    .sole-image {
      max-width: 200%;
      max-height: 200%;
      width: auto;
      height: auto;
      object-fit: contain;
      filter: drop-shadow(0 15px 40px rgba(0,0,0,0.2));
      z-index: 2;
      position: relative;
    }

    .right-section {
      flex: 1;
      display: flex;
      justify-content: center;
      align-items: center;
      padding: 40px;
      position: relative;
    }

    .login-card {
      background: rgba(255, 255, 255, 0.95);
      width: 100%;
      max-width: 400px;
      padding: 50px 40px;
      border-radius: 20px;
      box-shadow: 
        0 20px 60px rgba(233, 30, 99, 0.3),
        0 8px 25px rgba(0,0,0,0.15);
      text-align: center;
      backdrop-filter: blur(15px);
      border: 1px solid rgba(255,255,255,0.9);
    }

    .login-card h1 {
      margin-bottom: 40px;
      font-size: 32px;
      font-weight: 600;
      color: var(--dark-text);
      background: linear-gradient(45deg, var(--pink-gradient-start), var(--pink-gradient-end));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .form-group {
      margin-bottom: 25px;
      text-align: left;
    }

    .login-card label {
      display: block;
      font-size: 14px;
      font-weight: 500;
      margin-bottom: 8px;
      color: var(--dark-text);
    }

    .login-card input {
      width: 100%;
      padding: 16px;
      border: 2px solid #e0e0e0;
      border-radius: 12px;
      font-size: 15px;
      transition: all 0.3s ease;
      background: rgba(255,255,255,0.9);
    }

    .password-wrapper {
      position: relative;
    }

    .password-toggle {
      position: absolute;
      right: 12px;
      top: 50%;
      transform: translateY(-50%);
      background: none;
      border: none;
      cursor: pointer;
      color: #999;
      font-size: 18px;
      padding: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: color 0.3s ease;
    }

    .password-toggle:hover {
      color: var(--pink-accent);
    }

    .password-wrapper input {
      padding-right: 45px;
    }

    .login-card input:focus {
      border-color: var(--pink-accent);
      outline: none;
      box-shadow: 0 0 0 4px rgba(233,30,99,0.1);
      transform: translateY(-2px);
    }

    .login-card input::placeholder {
      color: #999;
    }

    .login-button {
      width: 100%;
      padding: 16px;
      border: none;
      border-radius: 12px;
      background: linear-gradient(45deg, var(--pink-gradient-start), var(--pink-gradient-end));
      color: var(--white);
      font-size: 16px;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
      margin-top: 10px;
      text-transform: uppercase;
      letter-spacing: 1px;
      position: relative;
      overflow: hidden;
    }

    .login-button::before {
      content: '';
      position: absolute;
      top: 0;
      left: -100%;
      width: 100%;
      height: 100%;
      background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
      transition: left 0.5s;
    }

    .login-button:hover::before {
      left: 100%;
    }

    .login-button:hover {
      transform: translateY(-3px);
      box-shadow: 0 10px 30px rgba(233,30,99,0.4);
    }

    .login-button:active {
      transform: translateY(-1px);
    }

    .extra-links {
      margin-top: 30px;
      padding-top: 20px;
      border-top: 1px solid #eee;
    }

    .extra-links a {
      color: var(--pink-accent);
      text-decoration: none;
      font-size: 14px;
      font-weight: 500;
      transition: all 0.3s ease;
    }

    .extra-links a:hover {
      color: var(--pink-gradient-start);
      text-decoration: underline;
    }

    #error-message {
      background: linear-gradient(45deg, #ffebee, #fce4ec);
      color: #c62828;
      font-size: 14px;
      padding: 12px 16px;
      border-radius: 8px;
      margin-top: 20px;
      border-left: 4px solid #f44336;
      text-align: left;
      display: none;
    }

    #error-message.show {
      display: block;
      animation: slideIn 0.3s ease;
    }

    @keyframes slideIn {
      from {
        opacity: 0;
        transform: translateY(-10px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    /* Loading state */
    .login-button.loading {
      opacity: 0.8;
      cursor: not-allowed;
      pointer-events: none;
    }

    .login-button.loading::after {
      content: '';
      display: inline-block;
      width: 16px;
      height: 16px;
      border: 2px solid transparent;
      border-top: 2px solid currentColor;
      border-radius: 50%;
      animation: spin 1s linear infinite;
      margin-left: 8px;
    }

    @keyframes spin {
      0% { transform: rotate(0deg); }
      100% { transform: rotate(360deg); }
    }

    /* Responsive Design */
    @media (max-width: 768px) {
      .main-container {
        flex-direction: column;
      }
      
      .left-section {
        flex: 0.4;
        padding: 20px;
      }
      
      .right-section {
        flex: 0.6;
        padding: 20px;
      }
      
      .sole-image {
        max-width: 300%;
        max-height: 300%;
      }
      
      .login-card {
        padding: 30px 20px;
      }
      
      .login-card h1 {
        font-size: 24px;
        margin-bottom: 30px;
      }
    }

    @media (max-width: 480px) {
      .left-section {
        flex: 0.3;
      }
      
      .right-section {
        flex: 0.7;
        padding: 15px;
      }
      
      .sole-image {
        max-width: 150%;
        max-height: 150%;
      }
      
      .login-card {
        padding: 25px 15px;
      }
      
      .login-card h1 {
        font-size: 20px;
      }
    }